Possible Clues:

• Visiting centre of Brunei, see swamp
• Romantic meeting with one novice, say, before flood
• Swamp is still ok to use after UN leaves
• Dine with aunt at sea in flood
• One sister needs to go steady with flood
• To give (someone) too much of something to deal with
• Hot and sunny periodically, leading to fruit deluge
• Overwhelm one good lady with appointment
• Overwhelm sister during current appointment
• Fed sister with fruit following flood